DENTISTRY
Figure 10A . A mesioverted maxillary canine in a Shetland sheepdog .
Figure 10B . Orthodontic buttons and elastics were used to pull the canine caudally .
8 . Extraction
• Tooth extraction is indicated when stage 4 periodontal disease is present ( the tooth has more than 50 percent support loss based on probing depths , greater than stage 2 mobility or gingival recession that has progressed past the mucogingival line ).
• Extraction is the best therapy when the tooth has between 25 and 50 percent support loss and the owner or the patient will not allow appropriate allow home care .
• Some fractured teeth are best extracted , especially those that have pulp exposure and stage 3 or 4 periodontal disease or marked internal resorption .
• Extraction is indicated when root canal therapy is not a viable option due to the owner ’ s wishes or the practice ’ s capability ( and lack of a referral option ).
• Feline teeth should be extracted via flap exposure when , in addition to the resorption , there is visible periodontal ligament and normal opacity on intraoral radiographs ( Types 1 and 3 ).
• Many cats affected by oropharyngeal inflammation that do not respond to home plaque control care benefit from the extraction of the teeth distal to the canines ; those that still do not respond should have all the teeth extracted .
• Extra ( supernumerary ) teeth that cause crowding , predisposing the normal teeth to periodontal disease , should be extracted .
• Persistent primary ( deciduous ) teeth should be removed at the time of diagnosis to prevent the potentially harmful location of the adult teeth
• Extraction is the treatment of choice for advanced caries .
Honourable mentions for B & C — bacteria , bupivacaine hydrochloride , bur , calculus , caries .
Figure 10C . A functional occlusion five months later .
7 . Oral surgery . Surgery is the treatment of choice to care for many oral masses , both benign and malignant . When planning oral surgery , the goal is to achieve a 1-cm tumor-free margin for benign masses and a 2-cm or greater margin for malignant oral tumors .
Issue 04 | AUGUST 2016 | 9